List of Hot 100 number-one singles of 2012 (Japan)
# List of Hot 100 number-one singles of 2012 (Japan)

This is a list of number one singles on the Billboard Japan Hot 100 chart in Japan in 2012. The week's most songs in Japan, ranked by the Hanshin Corporation and based on radio airplay measured by Plantech and sales data as compiled by SoundScan Japan.

## Chart history

| Date | Song | Artist |
| - | - | - |
| January 2 | "Boku no Hanbun" | SMAP |
| January 16 | "Wonderful Cupid/Glass no Mahou" | NYC |
| January 23 | "Kawatta Katachi no Ishi" | KinKi Kids |
| January 30 | "Good Luck" | Bump of Chicken |
| February 6 | "Kataomoi Finally" | SKE48 |
| February 13 | "Hitotsu" | Tsuyoshi Nagabuchi |
| February 20 | "Junjō U-19" | NMB48 |
| February 27 | "Give Me Five!" | AKB48 |
| March 5 | "Super Delicate" | Hey! Say! JUMP |
| March 12 | "I, Texas" | Tomohisa Yamashita |
| March 19 | "Wild at Heart" | Arashi |
| March 26 | "Still" | TVXQ |
| April 2 | "She! Her! Her!" | Kis-My-Ft2 |
| April 9 | "Ikiteru Ikiteku" | Masaharu Fukuyama |
| April 16 | "Go for It, Baby (Kioku no Sanmyaku)" | B'z |
| April 23 | "Spring of Life" | Perfume |
| April 30 | "Inori (Namida no Kidō)" | Mr. Children |
| May 7 | "Sakasama no Sora" | SMAP |
| May 14 | "Soredemo Suki Da yo" | Rino Sashihara |
| May 21 | "Face Down" | Arashi |
| May 28 | "Aishite-love-ru!" | SKE48 |
| June 4 | "Manatsu no Sounds Good!" | AKB48 |
| June 11 | "Manatsu no Sounds Good!" | AKB48 |
| June 18 | "Your Eyes" | Arashi |
| June 25 | "Ai Deshita." | Kanjani Eight |
| July 2 | "Kimi wa Boku Da" | Atsuko Maeda |
| July 9 | "Paparazzi" | Girls' Generation |
| July 16 | "Love Chase" | Tomohisa Yamashita |
| July 23 | "Love Love Summer" | Ketsumeishi |
| July 30 | "Chankapāna" | NEWS |
| August 6 | "ER" | Eight Ranger |
| August 13 | "Moment" | SMAP |
| August 20 | "Virginity" | NMB48 |
| August 27 | "Wanna Beeee!!!" | Kis-My-Ft2 |
| September 3 | "Hashire! Bicycle" | Nogizaka46 |
| September 10 | "Gingham Check" | AKB48 |
| September 17 | "Aoppana" | Kanjani Eight |
| September 24 | "Fumetsu no Scrum" | KAT-TUN |
| October 1 | "Kiss Datte Hidarikiki" | SKE48 |
| October 8 | "Oh!" | Girls' Generation |
| October 15 | "Sexy Summer ni Yuki ga Furu" | Sexy Zone |
| October 22 | "Beautiful Life" | Masaharu Fukuyama |
| October 29 | "Electric Boy" | Kara |
| November 5 | "Life Is Show Time" | Shō Kiryūin from Golden Bomber |
| November 12 | "Uza" | AKB48 |
| November 19 | "Kitagawa Kenji" | NMB48 |
| November 26 | "Ai no Beat" | Kis-My-Ft2 |
| December 3 | "Saraba, Itoshiki Kanashimitachi yo" | Momoiro Clover Z |
| December 10 | "Monsters" | The Monsters |
| December 17 | "Eien Pressure" | AKB48 |
| December 24 | "World Quest" | NEWS |
| December 31 | "Seifuku no Mannequin" | Nogizaka46 |
